New submission from Sindri Guðmundsson <sindrigudmunds...@gmail.com>:
Raising an Exception in a callback handler of apply_async and/or map_async will kill the _result_handler thread. This causes unexpected behavior as all subsequent callbacks won't be called and worse, pool.join will deadlock. The documentation states that callbacks should return immediately but it does not warn the user against raising an exception. Attached are steps to reproduce. ---------- components: Library (Lib) files: test_pool_error.py messages: 359194 nosy: Sindri Guðmundsson priority: normal severity: normal status: open title: _result_handler dies on raised exceptions [multiprocessing] type: behavior versions: Python 2.7, Python 3.5, Python 3.6, Python 3.7, Python 3.8, Python 3.9 Added file: https://bugs.python.org/file48818/test_pool_error.py _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue39190> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
